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ECHO 2
Launch Details
| Launched | 24 January 1964 |
| Flight ended | 6 June 1969 |
| Status | Decayed |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 740 |
| COSPAR ID | 1964-004A |
| Alternative names |
A-12 |
| Observing |